'Mamenchisauridae belongs to Sauropoda' according to F. Tang et al. 2001'Omeisaurus belongs to Mamenchisauridae' according to F. Tang et al. 2001'Sauropoda was reranked as a unranked clade and belongs to Sauropodomorpha' according to F. Tang et al. 2001'Sauropodomorpha was reranked as a unranked clade and belongs to Saurischia' according to F. Tang et al. 2001